1078131277 has 4 divisors (see below), whose sum is σ = 1078398400. Its totient is φ = 1077864156.

The previous prime is 1078131221. The next prime is 1078131281. The reversal of 1078131277 is 7721318701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7721318701 = 29 ⋅266252369.

It is a cyclic number.

It is not a de Polignac number, because 1078131277 - 2¹⁹ = 1077606989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078131077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127413 + ... + 135610.

It is an arithmetic number, because the mean of its divisors is an integer number (269599600).

Almost surely, 2^1078131277 is an apocalyptic number.

It is an amenable number.

1078131277 is a deficient number, since it is larger than the sum of its proper divisors (267123).

1078131277 is an equidigital number, since it uses as much as digits as its factorization.

1078131277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267122.

The product of its (nonzero) digits is 16464, while the sum is 37.

The square root of 1078131277 is about 32834.9094257925. The cubic root of 1078131277 is about 1025.3934724143.

Adding to 1078131277 its reverse (7721318701), we get a palindrome (8799449978).

It can be divided in two parts, 1078 and 131277, that added together give a triangular number (132355 = T₅₁₄).

The spelling of 1078131277 in words is "one billion, seventy-eight million, one hundred thirty-one thousand, two hundred seventy-seven".